Meet Our Staff

Jonathan Shadis

Customer Service Advisor

Jonathan has been in the automotive field for 11 years, starting as a technician, and then transitioned to Customer Service Advisor. He currently serves as the president of the ATRA Gulf States Chapter and has successfully passed BOTH his C1 Service Consultant: Automobile Service Consultant Certification, through (ASE) Automotive Service Excellence and his Chassis Technician Certification through (ATRA) The Automatic Transmission Rebuilders Association. Being a vehicle enthusiast and tinkering with vehicles has been something he has enjoyed since he was a young boy. Jonathan’s past experience in hospitality and current knowledge in the automotive field ensures a pleasant and smooth experience for Advanced Transmission customers. His warm smile and love for life is a comfort to customers in an otherwise complex, no fun experience with transmission repair. In his spare time, he enjoys the company of family and friends and shooting sports. Jonathan is happily married and is enjoying life as a father to his young son, vowing to take advantage of every opportunity to become a better father and husband.

Laura Wilson


Laura is co-owner and manager of Advanced Transmission, overseeing the daily activities from the business aspect of the office. Being a woman holding a leadership role in a predominantly man's field has been especially challenging. She has overcome this with flare and holds a prominent position as a board of director (elected 2 consecutive terms) with the Automatic Transmission Rebuilders Association (ATRA) serving the transmission rebuilding industry internationally. Laura has also served (ATRA) as the past president of the Gulf States Chapter for many years, along with founding Transmission Keepers. Her diversified experience also includes being a State of Alabama licensed Notary Public and Realtor. She never lets an opportunity to learn more about the industry and business in general pass her by and is constantly taking advantage of management seminars and other classes designed specifically for the transmission industry. "My main goal is to strive to help change the negative image of the automotive repairing industry." In Laura's spare time, she enjoys time with her grandchildren.

April Harrison

Administrative Assistant

April is Advanced Transmissions newest team member. She is a perfect fit and brings years of experience and knowledge that make her a valued asset to our team. She maintained her certification in Business Education from North Baldwin Center for Technology and holds two Associate Degrees from Coastal Alabama Community College in Office Administration and Word Processing Specialist. April's work ethic and experience is unsurpassable. She worked for a local Municipality in the Recreation Department and Public Works Department for many years, where she received her certification in grant writing, multiple FEMA certifications, along with advanced Microsoft applications. Her proudest accomplishment was building a database from scratch to keep track of maintenance records for city vehicles and equipment along with tracking the use of herbicide and pesticide applications by the city.

In her spare time, April loves spending time with her family in the great outdoors. She's very involved with her children along with being their biggest fan and cheerleader in their many sport activities.

Marvin Wilson

Owner/Lead Technician

Marvin is co-owner and Lead technician of Advanced Transmission, overseeing the shops daily production. Marvin is an ATRA Certified Rebuilder, Diagnostician and Chassis Technician. He is also ASE certified. Marvin grew up in the transmission business working for his father for 17 years, gaining priceless knowledge about older model transmissions from his father the late Woody Wilson. Marvin is continuously taking advantage of training seminars, webinars, EXPOs, etc., to keep himself abreast of the new models in an ever-changing industry, applying his hands-on experience as a daily working owner. Ensuring Advanced Transmission is offering to its customers the highest quality of work possible. Marvin's 39 years of experience has gained him recognition by industry leaders for his technical expertise. In his spare time, Marvin loves hunting, fishing and the outdoors. Especially time spent passing that legacy to his grandchildren.

Donnie Lanzer

Transmission Rebuilder

Donnie is the transmission rebuilder at Advanced Transmission with over 30 years’ experience. His extensive knowledge of the transmission theory (how it really works), is priceless in this industry. Donnie is an ATRA certified transmission Rebuilder and Diagnostician, along with being ASE certified. Donnie is known to be one of the best transmission rebuilders in the Southeast. Advanced Transmission’s aim is to assist Donnie in attending every possible training seminar, webinar and EXPO to further his knowledge and keep him on the cutting edge of the latest & greatest transmissions that the auto manufacturers produce each year. Donnie is close to his family and spends his spare time with them.

Kolten Coleman

Apprentice Technician

Kolten went from a full time student where he was taking automotive classes at the North Baldwin Center for Technology to working full time at Advanced Transmission as an apprentice technician. Kolten has accepted the challenge and eager to become a specialist in the transmission repair industry. He enjoys customizing cars and attending car meets with others whom share a passion for all things automotive. When Kolten’s not working with cars he enjoys spending time with his family and trail riding on his four wheeler. His dedication to the field is shown by successfully passing his (ATRA) Automatic Transmission Rebuilders Association; Chassis Technician Certification and desires to become both ASE certified as soon as he reaches the required work hours and experience to perform testing.

Brian Bell

Chassis Technician

Brian is Advanced Transmissions Chassis Technician with a lifetime of experience in the automotive repair industry. He started in the field of transmission specialty in 1997 and never looked back. Brian attended the automotive trade school in Atmore, AL and also attended George Wallace Technical School in Atmore, AL as well, with studies in the automotive repair industry. Brian continues his passion for knowledge by successfully passing his (ATRA) Automatic Transmission Rebuilders Association; Chassis Technician Certification. Brian enjoys fishing, swimming and spending time at the beach. He is also an avid dog lover.

Mike Guffey, Jr.

Chassis Technician & Apprentice Rebuilder

Mike is Advanced Transmissions newest addition to the TEAM. Mike had the privilege of being born with a wrench in his hand and worked as a Chassis Technician at a young age at his father’s transmission shop in Pensacola, FL., where he was born and raised. For the past 5 years, Mike decided to spread his wings and venture out of the South to Fredericksburg, VA where he was given the opportunity to transition from a Chassis tech to an apprentice Rebuilder. Mike has devoted his entire career to the Specialty Transmission industry and plans on going nowhere but up. Mike’s 9 year old daughter, Myli is his heart and spends his free time on the water fishing or in the woods hunting.